Roll-making machine



Aug. y 30 1927.

O. SCI- ILAUPlTZ ET AL l ROLL MAKING MACHINE Filed oct. 26. 1923 V/J' -K/4 Patented Aug. 36,

:UNITED STATES PATE-NT OFFICE.

oswALD scmQAU-'rrri 'um'wrunm sonnx, orycmirron, omo, paierons To run 'rnnmn noma ammo oonrm, orcmon, omo, A ooarona'rron or omo.

nou-llamo nomi. i appuaanmea mm as, anni n. Amms.

Our invention relates toroll making ma- Y chine, particularly to a machine adapted to make, b a die-shaping operation, conical rolls suc as'are used 1n comcal roller bearings; and has for its principal object a mav chine in which the roll is accurately centered parts subject to hardest wear may be removed for'replacement or repair.

The invention consists principally in, ro-

vidingthe heading machine with a ho lowpunch in the bore of which i's'disposed a second punch, the hollow punch having a central depressionl adapted to engage the roll blank to accurately center it in the die just as the upsetting operation begins. The

- invention -further consists. in the parts and combination of parts hereinafter described A and claimed.

.In the accompanying'drawing, I Fig 1 is a sectional view of a heading ma-f chine-embodying our invention, the parts die-s aping operation.

I of such machine forming no part of the 'present invention and not being shown v1n' Fig. 2 is a similar view showing the roll blank centered in the conical die at the beginning ofthe die-shaping operation, and

"Fig 3'is a similar view showin the position of the parts at` the end'othe dieshapin operation.

. A ho low punch holder 1 is mounted -in the ram of a suitable machine, thel construction the drawing. The .enlarged end portion of said punch holder 1 is rovided with an annular flange 2 that is a apted to fit overitheend of a die 3 in the conical seat 4 of which is disposed a cylindrical' slug 5 of the volumerequired to make a conical roll. Thus the punch mechanism is centered with respect to the die.

ySlidably mounted in the bore of the punch holder 1 is a hollow punch 6. The rear portion 7 of theI bore of the punch holder is enlarged and the -end portion 8 of the hollow punch isenlarged to 'fit such enlarged portion of said bore. Thus an annular rib 9 is formed on the unch andan annular shoulder 10 is forme in the punch holder,

shown' in their position prior to the' -A cylindrical slug the rib 9 and shoulder 10 cooperating to limit the forward movement of the punch 6 in the punch -holder 1. V

The rear end of the bore of the punch holder 1 is threaded to receive a threaded Acap 11. A. secondpunch 12 is disposed in the bore of the hollow punch and cooperates with said hollow punch' to make the roll. Said punch has a threaded extension 13 whereby it is -mounted in said threaded cap.

Mounted on said threaded extension" 13 in the bore of the punch holder 1 is an inteposed between' the cap-11 and the end of the hollow lpunch 6 is a helical springl 15 that riorly threaded sleeve 14. Said sleeve constitends to keep the punch in its outermost position in the punch holder.

The central portion of the hollowl punch is provided .with a depression 16 therein of Y suitablesize and shape to form the rounded end edge of a conical roller for roller bearings. he inner punch 12 hasa conical projection 17 lthereon adapted to forma conical depression in theend of the roller and is disposed so that when the hollow unch is in the rearmost position in the punc holder,

'the end edge 18 of the inner punch is flush with the bottom of the depression in the outer punch, the conical projection extending therebeyond, the two punches together forming the end of a roller.

The. punch' follows:

The inner punch 12 is mounted, inthe ca 11 and the sleeve 14 is mounted-'on the punc extension 13 in such position that when the hollow punch 6 is mounted on -the inner punch and moved against the sleeve 14, the

mechanism is assembled as i end edge 18 of the hollow` punch is flush with the bottom of the depression 16A in the hollow punch 6. The hollow punch 6 is then 'removed from the inner punch 12, the spring 15V laced in position on the sleeve 14, the hol ow punch. is again mounted on the inner unch, and the lpunch holder 1 is screwed in I Fhaoe e' operation of the machine 1s as folrequired for the rol is placed in the conical seat 4 in the die 3, as shown in Fig. 1. Pref- 510i the exact voli'xme los" erably, said die 3 is provided with a bore in which is disposed a member 19 that constitutes` a knock-out and also serves to cooperate with the end of the die seat to form the small end of the roll.. The ram of the vmachine moves forward carrying with it the punch mechanism. The hollow unch 6 is in its orward'position in the punc holder and l centerin the punch mechanism with reference to t e die. The slug is engaged'by the depression in the hollow punch, such engagement serving to raise the end of the slug as showninv Fig. 2, and accurately center it in the conical die seat. As the ram continues to move forward, the hollow punch is forced back against the pressure of the spring until it rests against the sleeve and the inner punch is in operative position. After the hollow punch strikes said sleeve the hollow punch and the center punch move forward together, thus upsetting the slug in the die seatk to form the conical roll 20. The nished roll 20 is shown in Fig. 3. After the roll is inished, the

unch mechanism is withdrawn and-the roll 1s rjlicted by means of the knock-out 19.

e numerous advantages. `It insures the accurate centering of thelslug in the conical die seat and thus results in the making of a conical roll of the exact size and lshape desired and a roll that is free froml ilashings herein described mechanism has ang projections, particularly at the large en l Obviously numerous changes may be made without departing from the invention, and we do not wish to be. limited to the precise vconstruction shown.

-What we claim is:

A roll making machine comprising having a conical, horizontally disposed seat, a knockout member formin portion of said die and having a conical end adapted to form a depression in the end of the work, a hollow punch holder movthe central end i `a die able toward said die, said'punch holder having an v'annular end flange adapted to fit'lover the end ofsaid die, a hollowpu'nch v slidably mounted in the bore of said punch holder, said punch having v a central concave depression adapted togengage' the end of the work and center it in the die and shape said end of the work, a second punch lfixed in said unch holder -and disposed in -the bore of said hollow punch andhaving a conical end adapted to form a depression in the end of` the work in alinement with the depression formed by said knockout member, and means for limiting the move! ment of said hollow punch in said punch holder whereby fsaid second punch forms the depression in the end of `the-work after said hollow punch has -shaped said end.

Signed at Canton, Ohio, thisl 22""da`y of otoer, 1923; OSWALD SCHLAUPITZ. WILLIAM SCHUM. i 

